Integrity ClearCase Integration

PTC has very limited documentation around ClearCase Integration with PTC Integrity. Anyone here has done integration with Rational ClearCase?

Question - Per instructions, created Change Package Type and Attributes in Integrity, but everytime I create Change Package its created with default Change Package Type "MKS Source" provided in out of box Solution (Integrity).

I could not find the way, I can change CP Type default to "ClearCase" given in integration manual.

Thanks

Adhik